CN104427533B - A method and device for optimization of neighboring cells - Google Patents

Abstract

The present invention provides a kind of neighbor cell optimizing method and device.The neighbor cell optimizing method includes: to obtain to reside in the mobile terminal of first community and carry out the update times of cell update in second community；If cell update number is more than or equal to preset first threshold value, and when not having second community in the adjacent area table of first community, mobile terminal is obtained in the signal strength average value of all cell updates of second community；By signal strength average value compared with default second threshold, when signal strength average value be more than or equal to second threshold when, extract cell update the reason of value；According to the cause value, determine second community whether be first community practical adjacent area.The present invention is on the basis of counting cell update number, utilize the distance of the signal strength of cell update, cell update reason and two minizones, four dimensions are combined together, determine second community whether be first community practical adjacent area, it saves a large amount of manpower and material resources to go to check neighboring BS relationship, improve work efficiency.

Description

A method and device for optimization of neighboring cells

technical field

The present invention relates to the fields of communication and wireless, and in particular, to a method and device for optimizing a neighboring cell.

Background technique

In the daily wireless network optimization work, a brand new cell update failure is found. Its characteristics are: after the user equipment UE of Cell A loses synchronization with the source cell in uplink or downlink, it runs to Cell B to initiate the cell update process. This phenomenon that the UE loses synchronization in Cell A and finally runs to Cell B for cell update Cell Update is collectively referred to as Cell Update of Cell Ato Cell B. An important sign of it is that the UE ID remains unchanged, that is, the UE is always under the same RRC connection. However, in the prior art, the actual neighbor relationship cannot be directly detected, and only a large amount of manpower and material resources are used to check the actual neighbor relationship to determine whether the neighbor is missed, which increases the workload of workers and is inefficient.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an adjacent area optimization method and device, which solves the problem of missing determination of adjacent areas in the prior art, reduces the workload of workers, and improves efficiency.

In order to solve the above problems, an embodiment of the present invention provides a neighbor cell optimization method, including:

Obtain the update times of the cell update performed in the second cell by the mobile terminal residing in the first cell;

If the number of cell updates is greater than or equal to a preset first threshold, and the second cell is not in the neighbor list of the first cell, obtain the average signal strength of all cells updated by the mobile terminal in the second cell value;

comparing the signal strength average value with a preset second threshold, and extracting a reason value for cell update when the signal strength average value is greater than or equal to the second threshold;

According to the cause value, it is determined whether the second cell is an actual neighbor of the first cell.

Wherein, the step of acquiring the update times of the cell update performed by the mobile terminal residing in the first cell in the second cell is specifically:

From the statistical table of connection signaling between the mobile terminal and the cell, the number of times of cell update performed by the mobile terminal residing in the first cell in the second cell is acquired.

Wherein, the step of acquiring the average value of signal strengths updated by the mobile terminal in all cells of the second cell includes:

Obtain all updated signal strengths of the mobile terminal in the second cell from the cell update signaling reported by the mobile terminal;

All signal strengths are averaged to obtain the average value of signal strengths updated by the mobile terminal in all cells of the second cell.

Wherein, according to the cause value, determining whether the second cell is an actual neighboring cell of the first cell includes:

The calculation cause value is the ratio of the radio link failure and the unrecoverable error at the RLC layer to the update cause value of all cells;

Whether the second cell is an actual neighbor of the first cell is determined according to the ratio.

Further, the step of determining whether the second cell is an actual neighbor of the first cell according to the ratio includes:

The ratio is compared with a preset third threshold, and if the ratio is greater than or equal to the third threshold, it is determined that the second cell is an actual neighboring cell of the first cell.

Further, the step of determining whether the second cell is an actual neighbor of the first cell according to the ratio includes:

When the ratio is greater than or equal to a preset third threshold, and the distance between the first cell and the second cell is less than or equal to a preset fourth threshold, it is determined that the second cell is a part of the first cell actual neighborhood.

Wherein, after determining that the second cell is an actual neighboring cell of the first cell, the method further includes:

Outputting an alarm that the second cell is missing from the neighbor cell table of the first cell as a neighbor cell of the first cell.

Wherein, after determining that the second cell is an actual neighboring cell of the first cell, the method further includes:

The second cell is added to the neighbor list of the first cell.

In order to achieve the above object, the present invention also provides a neighbor cell optimization device, comprising:

a first obtaining module, configured to obtain the update times of the cell update performed by the mobile terminal residing in the first cell in the second cell;

A second acquiring module, configured to acquire the location of the mobile terminal in the second cell when the number of cell updates is greater than or equal to a preset first threshold and the second cell is not in the neighbor list of the first cell The average value of signal strength updated by all cells;

a third acquisition module, configured to compare the average signal strength with a preset second threshold, and extract a reason value for cell update when the average signal strength is greater than or equal to the second threshold;

A determination module, configured to determine whether the second cell is an actual neighbor of the first cell according to the cause value.

Wherein, the determining module includes:

The calculation module is used to calculate the ratio of the cause value of the radio link failure and the unrecoverable error of the RLC layer to the update cause value of all cells;

A determination submodule, configured to determine whether the second cell is an actual neighboring cell of the first cell according to the ratio.

Further, the determining sub-module is specifically configured to compare the ratio with a preset third threshold, and if the ratio is greater than or equal to the third threshold, determine that the second cell is a part of the first cell. actual neighborhood.

Further, the determining sub-module is specifically configured to determine the predetermined threshold when the ratio is greater than or equal to a preset third threshold, and the distance between the first cell and the second cell is less than or equal to a preset fourth threshold. The second cell is an actual neighbor of the first cell.

The above-mentioned technical scheme of the present invention has at least the following beneficial effects:

In the neighbor cell optimization method of the embodiment of the present invention, on the basis of counting the update times of the cell update performed by the mobile terminal residing in the first cell in the second cell, the signal strength of the cell update, the reason for the cell update and the difference between the two cells are used. By combining the four dimensions, it can accurately determine whether the second cell is the actual neighboring cell of the first cell, and output the alarm of missing neighboring cells, saving a lot of manpower and material resources to check the relationship between neighboring cells, improving the work efficiency.

Description of drawings

FIG. 1 is a flowchart of a neighboring cell optimization method according to an embodiment of the present invention;

FIG. 2 is a specific implementation flowchart of a neighboring cell optimization method according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

Aiming at the problem that in the prior art, only relying on manpower to check the relationship of missing neighbor cells, the present invention provides a neighbor cell optimization method and device, in which the mobile terminals residing in the first cell are counted and the cells are updated in the second cell. On the basis of the update times of the cell, the signal strength of the cell update, the reason for cell update and the distance between the two cells are used to combine the four dimensions to accurately determine whether the second cell is the actual neighbor of the first cell, and output The alarm of missing neighboring cells saves a lot of manpower and material resources to check the relationship between neighboring cells and improves work efficiency.

As shown in FIG. 1 , an embodiment of the present invention provides a method for optimizing a neighboring cell, including:

Step 111: Acquire the update times of the cell update performed by the mobile terminal residing in the first cell in the second cell;

Step 112: If the number of times of cell update is greater than or equal to a preset first threshold, and the second cell is not in the neighbor list of the first cell, obtain the updated information of all cells of the mobile terminal in the second cell. Average signal strength;

Step 113: Compare the average value of signal strength with a preset second threshold, and extract a reason value for cell update when the average value of signal strength is greater than or equal to the second threshold;

Step 114: Determine whether the second cell is an actual neighbor of the first cell according to the cause value.

In the current network, the cell update of the missing neighbor cell has the following three distinctive characteristics: 1. The signal strength when the cell update is initiated is relatively high; Then the user equipment UE will report the cell update whose cause value is Radio Link Failure (Radio Link Failure), and the UE will report the cell update whose cause value is RLC Unrecoverable Error (RLC Unrecoverable Error) when the uplink is out of sync; 3. First The distance between cell A and the second cell B is relatively short.

In the above-mentioned embodiment of the present invention, the number of cell updates performed by the mobile terminal residing in the first cell in the second cell is abbreviated as "the number of cell updates from Cell A to Cell B". According to the number of cell updates from Cell A to Cell B, the mobile terminal jointly determines whether the second cell is an actual neighbor of the first cell in terms of the average signal strength of all cells in the second cell and the reason for the cell update. The above judgment method is highly accurate, saves a lot of manpower and material resources to check the actual neighbor relationship, and improves work efficiency.

The specifics of step 111 in the foregoing embodiment of the present invention may include:

Step 1111: Acquire, from the statistics table of connection signaling between the mobile terminal and the cell, the number of times that the mobile terminal residing in the first cell performs cell update in the second cell.

Further, the number of cell updates from Cell A to Cell B is greater than or equal to a preset first threshold N, preferably, the number of cell updates from Cell A to Cell B can be obtained from connection signaling statistics, but is not limited to In this method, all methods that can obtain the number of cell updates from Cell A to Cell B are applicable in the invention.

For example, the typical connection signaling table for cell update of cell 12231 and cell 13813 is as follows:

After the user loses synchronization in the source cell 12231, the user initiates a cell update in another cell 13813. An important sign of it is that the user ID remains unchanged, that is, the user is always under the same RRC connection.

In the above-mentioned embodiment of the present invention, the specific steps of step 112 include:

Step 1121: Acquire, from the cell update signaling reported by the mobile terminal, the signal strengths updated by the mobile terminal in all cells of the second cell;

Step 1122: Calculate the average value of all signal strengths to obtain the average value of signal strengths updated by the mobile terminal in all cells of the second cell.

In step 1121 of the embodiment of the present invention, when the mobile phone originally in the first cell A finally goes to the second cell B to initiate the cell update, the reported cell update signaling includes the signal strength of the second cell B, and the cell update is analyzed. The signaling obtains the updated signal strength of the mobile terminal in all cells of the second cell. In step 1122, a general mathematical method is used to average the updated signal strengths of all cells to obtain the average value of the updated signal strengths of the mobile terminal in all cells of the second cell.

In the above embodiment of the present invention, the reason value for cell update is extracted in step 113, as defined in 3GPP specifications, the cell update process is initiated by the user, and the user can initiate the cell update process when one of the following conditions is met. If certain kinds of cell update triggering conditions occur at the same time, the cell update is given priority to the previous reasons in the following order: 1. Uplink data transmission; 2. Paging response; 3. Radio Link Failure; 4. Re-enter the service area; 5. An unrecoverable error RLC (Unrecoverable Error) occurs at the RLC layer; 6. Cell reselection; 7. Periodic cell update. The radio link failure (Radio Link Failure) is the cause value of downlink out-of-synchronization, and the RLC layer unrecoverable error (RLC Unrecoverable Error) is the cause value of uplink out-of-synchronization.

In the above embodiment of the present invention, step 114 specifically includes:

Step 1141, the calculation cause value is the ratio of the radio link failure and the unrecoverable error at the RLC layer to the update cause value of all cells;

Step 1142: Determine whether the second cell is an actual neighbor of the first cell according to the ratio.

In the embodiment of the present invention, since the radio link failure and the unrecoverable error at the RLC layer are the main cell update cause values of "Cell A to Cell B cell update", according to the cause value, the radio link failure and the RLC layer The proportion of unrecoverable errors to all cell update cause values can determine whether the second cell B is an actual neighbor cell of the first cell A.

In the above embodiment of the present invention, step 1142 specifically includes:

Step 11421: Compare the ratio with a preset third threshold, and if the ratio is greater than or equal to the third threshold, determine that the second cell is an actual neighbor of the first cell.

According to statistics, if the first cell A misses the second cell B as a neighboring cell, if the user originally in the first cell A goes to the second cell B to initiate a cell update, the reason is generally Radio Link Failure and Radio Link Failure and An unrecoverable error RLC Unrecoverable Error occurred at the RLC layer. Therefore, the statistical cause value is the ratio of radio link failure and RLC layer unrecoverable errors to all cause values, and a new threshold is set to judge whether the ratio is large enough, and the second cell B is determined if the ratio is large enough. It is the actual neighboring cell of the first cell A, so as to increase the accuracy of judgment.

The invention has wide applicability and can be applied to all 3G networks based on 3GPP protocol, such as TD-SCDMA and WCDMA networks. However, when applied to the TD-SCDMA network, since each base station has GPS as a time synchronization tool, the distance between the two cells can be calculated. Therefore, step 1142 in the above-mentioned embodiment of the present invention, when applied to a TD-SCDMA network, specifically includes:

Step 11422, when the ratio is greater than or equal to a preset third threshold, and the distance between the first cell and the second cell is less than or equal to a preset fourth threshold, determine that the second cell is the third threshold. The actual neighbors of a cell.

The specific implementation process of the method shown in the above-mentioned Fig. 1 is described below in conjunction with Fig. 2:

Step 1, count the number of cell updates from the first cell to the second cell, if the number of cell updates is greater than or equal to the preset first threshold N, then enter step 2;

Step 2, judging whether the second cell is a neighbor cell in the neighbor cell table of the first cell, if not, then enter step 3;

Step 3, calculate the average value of signal strengths updated by all cells from the first cell to the second cell;

Step 4, determine whether the average value of the signal strength is greater than or equal to the preset second threshold R, if so, go to Step 5;

Step 5, extract the cause value of cell update, and calculate the cause value as the ratio of radio link failure and RLC layer occurrence of unrecoverable error to all cell update cause values;

Step 6, determine whether the above-mentioned ratio is greater than or equal to the preset third threshold P, if so, enter step 7;

It should be noted that, if it is a WCDMA 3G network, step 7 and 8 are directly skipped from step 6, and step 9 is directly entered. Steps 7 and 8 are only for the TD-SCDMA system.

Step 7, calculate the distance between the two cells by the longitude and latitude recorded by the GPS of the two base stations;

Step 8, determine whether the above-mentioned distance is less than or equal to the preset fourth threshold D, if so, enter step 9;

Step 9, outputting the second cell as the actual neighboring cell of the first cell.

In the above embodiment of the present invention, in the TD-SCDMA network, on the basis of judging that the ratio is large enough, the longitude and latitude of the first cell A and the second cell B need to be obtained by using GPS, so as to calculate the distance between the two cells. distance, when the geographic distance between the two cells is sufficiently small, the first cell A and the second cell B are actual neighboring cells, and this step is used to increase the accuracy of judging the relationship between neighboring cells again.

Another embodiment of the present invention, after step 11421 or step 11422, further includes:

Step 401: Output an alarm that the second cell is missing from the neighbor cell table of the first cell as a neighbor cell of the first cell.

Those skilled in the art can focus on checking the neighbor relationship between the first cell A and the second cell B according to the alarm of missing neighbor cells output in step 401, and further determine its accuracy. And remind the technician to designate the second cell B as the adjacent cell of the first cell A.

Another embodiment of the present invention, after step 11421 or step 11422, further includes:

Step 402, adding the second cell to the neighbor list of the first cell.

According to the judgment of the above four aspects, it can be concluded that the first cell A misses the second cell B as a neighboring cell, then step 402 is to add the second cell B to the neighboring cell list of the first cell A, and the second cell becomes Neighbors of the first cell. When the signal strength of the user in the first cell A is weak, the user can be successfully handed over to the second cell B with the stronger signal strength, reducing the possibility of dropped calls.

In order to achieve the above object, the present invention also provides a neighbor cell optimization device, comprising:

a first obtaining module, configured to obtain the update times of the cell update performed by the mobile terminal residing in the first cell in the second cell;

A second acquiring module, configured to acquire the location of the mobile terminal in the second cell when the number of cell updates is greater than or equal to a preset first threshold and the second cell is not in the neighbor list of the first cell The average value of signal strength updated by all cells;

a third acquisition module, configured to compare the average signal strength with a preset second threshold, and extract a reason value for cell update when the average signal strength is greater than or equal to the second threshold;

A determination module, configured to determine whether the second cell is an actual neighbor of the first cell according to the cause value.

Wherein, the determining module includes:

The calculation module is used to calculate the ratio of the cause value of the radio link failure and the unrecoverable error of the RLC layer to the update cause value of all cells;

A determination submodule, configured to determine whether the second cell is an actual neighboring cell of the first cell according to the ratio.

The determining sub-module is specifically configured to compare the ratio with a preset third threshold, and if the ratio is greater than or equal to the third threshold, determine that the second cell is the actual size of the first cell Neighborhood.

Wherein, in the TD-SCDMA network, the determining sub-module may also be specifically used for when the ratio is greater than or equal to a preset third threshold, and the distance between the first cell and the second cell is less than or equal to a preset When the fourth threshold is reached, it is determined that the second cell is an actual neighboring cell of the first cell.

An apparatus for optimizing a neighboring cell provided by an embodiment of the present invention, on the basis of counting the number of times that a mobile terminal residing in a first cell performs cell update in a second cell, uses the signal strength of cell update, the reason for cell update, and The distance between the two cells combines the four dimensions to accurately determine whether the second cell is the actual neighbor of the first cell, and output an alarm for missing neighbors, saving a lot of manpower and material resources to check the relationship between neighbors ,Improved work efficiency. The above embodiments of the neighbor optimization method and its beneficial effects are applicable to this device.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (6)

1. A neighbor cell optimization method is characterized by comprising the following steps:

acquiring the updating times of cell updating of a mobile terminal residing in a first cell in a second cell;

if the cell updating times are larger than or equal to a preset first threshold value and the second cell does not exist in the neighbor cell list of the first cell, acquiring the updated signal intensity average value of all cells of the mobile terminal in the second cell;

comparing the signal intensity average value with a preset second threshold value, and extracting a reason value for updating the cell when the signal intensity average value is greater than or equal to the second threshold value;

determining whether the second cell is an actual neighbor cell of the first cell according to the cause value;

wherein determining whether the second cell is an actual neighboring cell of the first cell according to the cause value comprises:

calculating the ratio of the cause value to the update cause value of all cells, wherein the cause value is the ratio of the radio link failure and the unrecoverable error of the RLC layer;

determining whether the second cell is an actual adjacent cell of the first cell according to the proportion;

wherein the step of determining whether the second cell is an actual neighboring cell of the first cell according to the ratio comprises:

comparing the ratio with a preset third threshold, and if the ratio is greater than or equal to the third threshold, determining that the second cell is an actual adjacent cell of the first cell;

or,

and when the ratio is greater than or equal to a preset third threshold value and the distance between the first cell and the second cell is less than or equal to a preset fourth threshold value, determining that the second cell is an actual adjacent cell of the first cell.

2. The method of claim 1, wherein the step of obtaining the number of times of updating the cell update performed by the mobile terminal residing in the first cell in the second cell specifically comprises:

and acquiring the updating times of the mobile terminal residing in the first cell for updating the cell in the second cell from the connection signaling statistical table of the mobile terminal and the cell.

3. The method of claim 1, wherein the step of obtaining the updated signal strength average of all cells of the second cell by the mobile terminal comprises:

acquiring the updated signal intensity of all cells of the mobile terminal in a second cell from the cell updating signaling reported by the mobile terminal;

and averaging all the signal strengths to obtain the updated signal strength average value of the mobile terminal in all the cells of the second cell.

4. The method of optimizing the neighboring cell according to claim 1, wherein determining that the second cell is an actual neighboring cell of the first cell further comprises:

and outputting an alarm for undermining the second cell as the adjacent cell of the first cell in the adjacent cell table of the first cell.

5. The method of optimizing the neighboring cell according to claim 1, wherein determining that the second cell is an actual neighboring cell of the first cell further comprises:

adding the second cell in a neighbor list of the first cell.

6. A neighbor optimization apparatus, comprising:

a first obtaining module, configured to obtain the number of times for updating a cell in a second cell by a mobile terminal residing in a first cell;

a second obtaining module, configured to obtain an average value of signal strengths updated by the mobile terminal in all cells of a second cell when the number of times of cell update is greater than or equal to a preset first threshold and the second cell is not present in a neighbor list of the first cell;

the third acquisition module is used for comparing the signal intensity average value with a preset second threshold value and extracting a reason value for cell updating when the signal intensity average value is greater than or equal to the second threshold value;

a determining module, configured to determine whether the second cell is an actual neighboring cell of the first cell according to the cause value;

wherein the determining module comprises:

the calculation module is used for calculating the ratio of the reason value to the update reason value of all the cells, wherein the reason value is the ratio of the radio link failure and the unrecoverable error of the RLC layer;

a determining submodule, configured to determine whether the second cell is an actual neighboring cell of the first cell according to the ratio;

the determining submodule is specifically configured to compare the ratio with a preset third threshold, and determine that the second cell is an actual neighboring cell of the first cell if the ratio is greater than or equal to the third threshold;

or, the determining submodule is specifically configured to determine that the second cell is an actual neighboring cell of the first cell when the ratio is greater than or equal to a preset third threshold and the distance between the first cell and the second cell is less than or equal to a preset fourth threshold.